Inverse Functions (Grade 12 NSC Matric Mathematics): Flashcards
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Practise the cards
10 cards from this deck
What inverse function does
What inverse function does
Reverses/undoes the original function
Formal condition: ?
Formal condition: ?
Requirement for invertible function
Requirement for invertible function
Must be one-to-one relation
Function with inverse is called
Function with inverse is called
Invertible
Step 1 to find inverse
Step 1 to find inverse
Interchange and
Steps 2-3 to find inverse
Steps 2-3 to find inverse
Make subject, express in function notation
and graphs: reflections about line
and graphs: reflections about line
Inverse function notation
Inverse function notation
(not an exponent)
Reciprocal function formula
Reciprocal function formula
When function has no inverse
When function has no inverse
Not one-to-one (fails horizontal line test)